banks: xXew fossorial hymenoptera. 103 



antennae, reddish wings, more red than in M. ustulata, with definite 

 bhick tips. Metanotum densely haired, and transversely wrifikled. 

 Legs spined as in that species; tliird and fourth antcnnal joints a 

 little shorter than in M. ustulata. Wings with venation much like 

 M. vstulata, but the second recurrent is practically straight and ends 

 nearly at middle of the third submarginal cell ; the first recurrent ends 

 plainly before end of second submarginal cell; the third submarginal 

 extends rather further beyond the marginal than in M. ustulata. 

 Length, 15 to 20 mm. 



Mygnimia ustulata Dalbom. 



Occurs in Texas, Kansas, and Arizona. Wings are black at base 

 as well as at tips; the second recurrent vein sinuate, the marginal cell 

 broad at tip, the metanotum hairy and transversely wrinkled above; 

 the first recurrent ends practically at end of the second submarginal 

 cell. 



POMPILOIDES SUBCYLINDRICUS, sp. UOV. 



Tijpe.— M. C. Z. 10,015. Va.: Falls Church, July, August. 

 Nathan Banks. Thirty-two specimens. 



Similar to P. cylindricus, but the pronotum in both sexes is arcuate 

 behind. 



Black; in female the wings very dark, male with lighter wings, 

 dark at tips. 



9 Antennae rather shorter than in P. cylindricus, the third joint, 

 however, elongate; hind legs also shorter than in that species. Face 

 about as in that species; pronotum broadly arcuate behind; meta- 

 notum with median groove rather deeper than in P. cylindricus. 

 Abdomen hair\- at tip and on apex of ventral segments; venation as 

 in P. cylindricus; third submarginal cell triangular or short petiolate. 



cf Similar to 9 , but very slender; the lower face and about base 

 of antennae, part of pronotum, and much of the pleura silvery pubes- 

 cent; venter without brushes. 



Size as in P. cylindricus. 



SOPHROPO.MPILUS TUMIFRONS, sp. nov. 



Type.— M. C. Z. 10,01(5. Calif.: San Diego Co., 14 June. E. P. 

 Van Duzee. One specimen. 



cT Blue-black, densely hairy; clypeus rounded below; antennae 



